If you're lucky, an inspector will point you to problems that you will
have to investigate and remedy. DAMHIKT. You'll probably be told a
series of lies if you ask about various specifics.

You need someone there representing you alone, who knows what he/she's
looking at, especially concerning the site, foundation, framing,
plumbing, electrical.

Useful tools while visiting house: a big nail for checking
concrete/mortar integrity, pocket knife for checking wood for rot.

After 40-50 yrs, typically mortar and concrete lose strength. Salt and
acidity speed this up. For house 100 yrs old, I'd bring along a
structural engineer. Or pass.

HTH,
J